Low frequency foot massage instrument



FIG. 1 is a perspective view of a low frequency foot massage instrument according to my new design;

FIG. 2 is a front view of a low frequency foot massage instrument according to my new design;

FIG. 3 is a rear view of a low frequency foot massage instrument according to my new design;

FIG. 4 is a left side view of a low frequency foot massage instrument according to my new design;

FIG. 5 is a right side view of a low frequency foot massage instrument according to my new design;

FIG. 6 is a plan view of a low frequency foot massage instrument according to my new design; and,

FIG. 7 is a bottom view of a low frequency foot massage instrument according to my new design. 

The ornamental design for a low frequency foot massage instrument, as shown and described. 